Err 01 on 1Ds Mark III + 16-35 USM II

Started 7 months ago | Discussions thread
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Walter de la Internet
Contributing MemberPosts: 948Gear list
Err 01 on 1Ds Mark III + 16-35 USM II
7 months ago

I began to receive Err 01 and cannot take images with my 16-35 USM II, also auto-focus doesn't function prior to attempting to fire the shutter.

Lens is a second hand 16-35 USM II that I have used for 2+ years with no issues.

When I plug in my Sigma 150-500mm, the camera functions normally and the error goes away.

I have tried disconnecting and reconnecting the 16-35 USM II lens a number of times, but this does not resolve the problem.

The connectors on the lens do not appear faulty.

The lens was recently exposed to a very minor amount of moisture, but is supposed to be professional / weather sealed so I do not expect this to be the cause.

Right now I am in a city with 4 days of holidays (just started today) and no open Canon Service Center. Nothing is under warranty.

Any tips on how to get this lens functioning again? An excuse to buy a new toy is always welcome

 Walter de la Internet's gear list:Walter de la Internet's gear list
Canon EOS-1Ds Mark III Canon EF 50mm f/1.8 II Canon EF 16-35mm f/2.8L II USM Sigma 150-500mm F5-6.3 DG OS HSM Canon Pixma Pro-1 +1 more
Canon EF 16-35mm f/2.8L II USM Canon EOS-1Ds Mark III
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